------------[ cut here ]------------
refcount_t: decrement hit 0; leaking memory.
WARNING: CPU: 1 PID: 7015 at lib/refcount.c:31 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
Modules linked in:
CPU: 1 UID: 0 PID: 7015 Comm: syz.0.16 Not tainted 6.13.0-rc6-syzkaller-00036-gfbfd64d25c7a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
lr : refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31
sp : ffff80009adf7a10
x29: ffff80009adf7a10 x28: dfff800000000000 x27: ffff0000d88a7080
x26: dfff800000000000 x25: ffff7000135bef4c x24: ffff0000dc4ad210
x23: ffff0000d8521800 x22: ffff80009adf7a80 x21: 0000000000000004
x20: ffff0000d525e64c x19: ffff8000914ff000 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008acb6b60 x15: 0000000000000001
x14: 1fffe0003675e0ea x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000002 x10: 0000000000ff0100 x9 : b289f271e9931600
x8 : b289f271e9931600 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009adf7138 x4 : ffff80008e9cf3c0 x3 : ffff80008071bcd8
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 refcount_warn_saturate+0x1e8/0x20c lib/refcount.c:31 (P)
 __refcount_dec include/linux/refcount.h:336 [inline]
 refcount_dec include/linux/refcount.h:351 [inline]
 ref_tracker_free+0x550/0x6ac lib/ref_tracker.c:236
 netdev_tracker_free include/linux/netdevice.h:4156 [inline]
 netdev_put include/linux/netdevice.h:4173 [inline]
 ax25_release+0x350/0x8ac net/ax25/af_ax25.c:1069
 __sock_release net/socket.c:640 [inline]
 sock_close+0xa4/0x1e8 net/socket.c:1408
 __fput+0x1bc/0x75c fs/file_table.c:450
 ____fput+0x20/0x30 fs/file_table.c:478
 task_work_run+0x230/0x2e0 kernel/task_work.c:239
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 1684
hardirqs last  enabled at (1683): [<ffff80008048a500>] __up_console_sem kernel/printk/printk.c:344 [inline]
hardirqs last  enabled at (1683): [<ffff80008048a500>] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2869
hardirqs last disabled at (1684): [<ffff80008acb1c4c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:488
softirqs last  enabled at (1650): [<ffff800089d78a58>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (1650): [<ffff800089d78a58>] ax25_cb_del+0x14c/0x198 net/ax25/af_ax25.c:70
softirqs last disabled at (1648): [<ffff800089d7893c>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (1648): [<ffff800089d7893c>] ax25_cb_del+0x30/0x198 net/ax25/af_ax25.c:65
---[ end trace 0000000000000000 ]---